Back out some pingpong server stopping changes introduced last week in

order to re-use 'classic' stopping and allow taking test-suite run time
references from this state.

tests/ftp.pm

@@ -170,8 +170,6 @@ sub killpid {
 sub ftpkillslave {
     my ($id, $ext, $verbose)=@_;
     my $base;
-    my $pidlist;
-    my @pidfiles;
 
     for $base (('filt', 'data')) {
         my $f = ".sock$base$id$ext.pid";
@@ -179,15 +177,10 @@ sub ftpkillslave {
         if($pid > 0) {
             printf ("* kill pid for %s => %d\n", "ftp-$base$id$ext", $pid)
                 if($verbose);
-            $pidlist .= "$pid ";
+            kill (9, $pid);
+            waitpid($pid, 0);
         }
-        push @pidfiles, $f;
-    }
-
-    killpid($verbose, $pidlist);
-
-    foreach my $pidfile (@pidfiles) {
-        unlink($pidfile);
+        unlink($f);
     }
 }
 
@@ -197,8 +190,6 @@ sub ftpkillslave {
 #
 sub ftpkillslaves {
     my ($verbose) = @_;
-    my $pidlist;
-    my @pidfiles;
 
     for $ext (('', 'ipv6')) {
         for $id (('', '2')) {
@@ -208,18 +199,13 @@ sub ftpkillslaves {
                 if($pid > 0) {
                     printf ("* kill pid for %s => %d\n", "ftp-$base$id$ext",
                         $pid) if($verbose);
-                    $pidlist .= "$pid ";
+                    kill (9, $pid);
+                    waitpid($pid, 0);
                 }
-                push @pidfiles, $f;
+                unlink($f);
             }
         }
     }
-
-    killpid($verbose, $pidlist);
-
-    foreach my $pidfile (@pidfiles) {
-        unlink($pidfile);
-    }
 }
 
 

tests/ftpserver.pl

@@ -96,12 +96,6 @@ my $exit_signal;         # first signal handled in exit_signal_handler
 #
 sub exit_signal_handler {
     my $signame = shift;
-    local $!; # preserve errno
-    if($got_exit_signal == 0) {
-        $got_exit_signal = 1;
-        $exit_signal = $signame;
-    }
-    $SIG{$signame} = \&exit_signal_handler;
     # For now, simply mimic old behavior.
     ftpkillslaves($verbose);
     unlink($pidfile);
@@ -112,19 +106,6 @@ sub exit_signal_handler {
     exit;
 }
 
-#**********************************************************************
-# dead_child_handler takes care of reaping dead child processes.
-#
-sub dead_child_handler {
-    use POSIX ":sys_wait_h";
-    local $!; # preserve errno
-    local $?; # preserve exit status
-    while (waitpid(-1, &WNOHANG) > 0) {
-        select(undef, undef, undef, 0.05);
-    }
-    $SIG{CHLD} = \&dead_child_handler;
-}
-
 #**********************************************************************
 # getlogfilename returns a log file name depending on given arguments.
 #
@@ -220,7 +201,6 @@ if($proto !~ /^(ftp|imap|pop3|smtp)\z/) {
 
 $SIG{INT} = \&exit_signal_handler;
 $SIG{TERM} = \&exit_signal_handler;
-$SIG{CHLD} = \&dead_child_handler;
 
 sub sysread_or_die {
     my $FH     = shift;
@@ -236,7 +216,8 @@ sub sysread_or_die {
         ($fcaller, $lcaller) = (caller)[1,2];
         logmsg "Failed to read input\n";
         logmsg "Error: ftp$ftpdnum$ext sysread error: $!\n";
-        killpid($verbose, $sfpid);
+        kill(9, $sfpid);
+        waitpid($sfpid, 0);
         logmsg "Exited from sysread_or_die() at $fcaller " .
                "line $lcaller. ftp$ftpdnum$ext sysread error: $!\n";
         unlink($pidfile);
@@ -250,7 +231,8 @@ sub sysread_or_die {
         ($fcaller, $lcaller) = (caller)[1,2];
         logmsg "Failed to read input\n";
         logmsg "Error: ftp$ftpdnum$ext read zero\n";
-        killpid($verbose, $sfpid);
+        kill(9, $sfpid);
+        waitpid($sfpid, 0);
         logmsg "Exited from sysread_or_die() at $fcaller " .
                "line $lcaller. ftp$ftpdnum$ext read zero\n";
         unlink($pidfile);
@@ -276,7 +258,8 @@ sub startsf {
 
     if($pong !~ /^PONG/) {
         logmsg "Failed sockfilt command: $cmd\n";
-        killpid($verbose, $sfpid);
+        kill(9, $sfpid);
+        waitpid($sfpid, 0);
         unlink($pidfile);
         if($serverlogslocked) {
             $serverlogslocked = 0;
@@ -824,7 +807,8 @@ sub PASV_ftp {
     my $prev = processexists($pidf);
     if($prev > 0) {
         print "kill existing server: $prev\n" if($verbose);
-        killpid($verbose, $prev);
+        kill(9, $prev);
+        waitpid($prev, 0);
     }
 
     # We fire up a new sockfilt to do the data transfer for us.
@@ -837,7 +821,8 @@ sub PASV_ftp {
     sysread_or_die(\*DREAD, \$pong, 5);
 
     if($pong !~ /^PONG/) {
-        killpid($verbose, $slavepid);
+        kill(9, $slavepid);
+        waitpid($slavepid, 0);
         sendcontrol "500 no free ports!\r\n";
         logmsg "failed to run sockfilt for data connection\n";
         return 0;
@@ -971,7 +956,8 @@ sub PORT_ftp {
 
     if($pong !~ /^PONG/) {
         logmsg "Failed sockfilt for data connection\n";
-        killpid($verbose, $slavepid);
+        kill(9, $slavepid);
+        waitpid($slavepid, 0);
     }
 
     logmsg "====> Client DATA connect to port $port\n";
@@ -1091,7 +1077,8 @@ while(1) {
     # flush data:
     $| = 1;
 
-    killpid($verbose, $slavepid);
+    kill(9, $slavepid) if($slavepid);
+    waitpid($slavepid, 0) if($slavepid);
     $slavepid=0;
         
     &customize(); # read test control instructions

tests/runtests.pl

@@ -2277,6 +2277,11 @@ sub singletest {
     my @killservers = getpart("client", "killserver");
     foreach my $serv (@killservers) {
         chomp $serv;
+        if($serv =~ /^ftp(\d*)(-ipv6|)/) {
+            my ($id, $ext) = ($1, $2);
+            #print STDERR "SERV $serv $id $ext\n";
+            ftpkillslave($id, $ext, $verbose);
+        }
         if($run{$serv}) {
             stopserver($run{$serv}); # the pid file is in the hash table
             $run{$serv}=0; # clear pid
@@ -2284,11 +2289,6 @@ sub singletest {
         else {
             logmsg "RUN: The $serv server is not running\n";
         }
-        if($serv =~ /^ftp(\d*)(-ipv6|)/) {
-            my ($id, $ext) = ($1, $2);
-            #print STDERR "SERV $serv $id $ext\n";
-            ftpkillslave($id, $ext, $verbose);
-        }
     }
 
     # remove the test server commands file after each test